Hello abhay,
The NTA score and percentile are same things,they are your marks out of 100 after normalisation.
The normalisation process is simple and formula based, it depends on your shift, difficulty of examination, session and your marks also.
Your friend given examination in different shift and difficulty of his examination was higher than yours.
You can check out our rank predictor and also college predictor for more information and maybe it will clear your doubt in a better way.
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